read what Pimm says

Posted by GSH on February 22, 2015 at 13:11:04

In Reply to: RE: CCS set up for 1620 or 6SJ7 posted by GSH on February 22, 2015 at 08:31:05:

"Here is the schematic of a driver stage using a 6BQ5 Pentode and CCS combo. Highlights of the circuit performance are gain of 125, output impedance of 500 ohms and distortion of .25% at 90 volts RMS. Not many driver stages can do .25% at 90V RMS! The operating parameters and measurements are on the schematic.

The performance speaks for itself. I guess I could just use a 6BQ5, but
I was hoping to adapt this approach to a 6SJ7 or 1620.

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Follow Ups Full Thread

Topic - CCS set up for 1620 or 6SJ7 - GSH 10:33:41 02/21/15 (18)

RE: CCS set up for 1620 or 6SJ7 - Tre' 11:24:52 02/21/15 (17)

RE: CCS set up for 1620 or 6SJ7 - GSH 14:10:58 02/21/15 (16)

RE: CCS set up for 1620 or 6SJ7 - Eli Duttman 15:53:57 02/21/15 (14)

RE: CCS set up for 1620 or 6SJ7 - GSH 08:31:05 02/22/15 (13)

RE: CCS set up for 1620 or 6SJ7 - Caucasian Blackplate 19:12:23 02/22/15 (0)

read what Pimm says - GSH 13:11:04 02/22/15 (2)

RE: read what Pimm says - Eli Duttman 15:08:37 02/22/15 (1)

RE: read what Pimm says - GSH 15:16:45 02/22/15 (0)

RE: CCS set up for 1620 or 6SJ7 - Eli Duttman 08:38:04 02/22/15 (8)

RE: CCS set up for 1620 or 6SJ7 - Tre' 08:48:12 02/22/15 (7)

RE: CCS set up for 1620 or 6SJ7 - JKT 12:09:54 02/22/15 (6)

Re: Schematics shown by GSH above... - Lew 08:37:22 02/23/15 (0)

Norton equivalent - Tre' 21:12:51 02/22/15 (0)

Excellent - drlowmu 20:02:08 02/22/15 (2)

RE: Excellent - JKT 22:54:59 02/22/15 (1)

RE: Excellent , Norton Ave, LA, CA, is "C.J." ...still with us?? - drlowmu 07:08:46 02/23/15 (0)

Nice explanation. Thanks (nt) - Tre' 15:56:17 02/22/15 (0)

RE: CCS set up for 1620 or 6SJ7 - Triode_Kingdom 15:48:25 02/21/15 (0)

Follow Ups

read what Pimm says - GSH 13:11:04 02/22/15 (2)

RE: read what Pimm says - Eli Duttman 15:08:37 02/22/15 (1)

RE: read what Pimm says - GSH 15:16:45 02/22/15 (0)

read what Pimm says

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